To wrap completely in a shroud or to cover completely and hide from view.
From English prefix 'en-' + 'shroud' (a burial cloth or something that conceals). Originally literal (wrapping a body), it evolved to mean concealing or hiding anything completely.
There's something poetic about 'enshroud' that plain verbs like 'cover' or 'hide' lack—it specifically evokes the image of something being wrapped in cloth, which gives the word an emotional and slightly mournful quality, which is why it appears so often in Gothic and dramatic literature.
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